US · FMCSA ACTIVE
R BLUME UNDERGROUND INC
dba RBU
Humboldt, AZ 86329 · DOT 2054219
Company profile
Web-discovered · as of 2026-07-30
R Blume Underground Inc (RBU) is an Arizona-based, family-owned underground utility contractor specializing in directional boring, trenching, and infrastructure installation. They operate a private fleet to support their own construction projects.
Fleet use
Specialized service
Operating scope
Regional
Service model
own account, dedicated
Equipment
specialized, dump
Ownership
Private
Employees
11-50
HQ · 2895 N State Route 89, Chino Valley, AZ 86323
Active website, 2026 job postings, and active AZ business license found.
Registry record
Source FMCSA · as of 2026-08-01
Fleet size
34
power units
Activity
road freight carrier
private licence
In operation since
2010
7 drivers
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